501F12 - ESAB Oxweld 3/16" Single Acetylene Hose, Grade R, A-A Fittings, 12.5 ft

Technical Overview of the ESAB 501F12 Single Hose

The ESAB 501F12 is a specialized single-line gas hose engineered for light-duty oxy-fuel applications. This hose is manufactured to Grade R specifications, making it suitable for acetylene gas service. It features a 3/16-inch internal diameter (ID), which is the standard size for precision welding and brazing setups often found in HVAC, jewelry manufacturing, and light metal fabrication. The hose is constructed from high-quality rubber compounds that provide resistance to heat, sparks, and abrasion, ensuring a long service life under normal workshop conditions.

One of the defining characteristics of this SKU is its termination. It comes factory-fitted with "A-Size" connections (3/8"-24 UNF threads) on both ends (A-A configuration). This distinguishes it from standard industrial hoses which typically utilize "B-Size" (9/16"-18) fittings. The A-size fittings are specifically designed for smaller, lightweight torch handles and regulators, ensuring a direct and secure connection without the need for additional adapters that can introduce leak points. The ferrules are professionally crimped to withstand the working pressures associated with acetylene welding and cutting operations.

At 12.5 feet in length, this hose provides an optimal balance between reach and manageability. It is long enough to allow the operator to move freely around a workbench or small assembly, yet short enough to prevent tangling and pressure drops associated with excessively long runs. Users should note that Grade R hoses are not compatible with LP gases (propane, propylene, natural gas) as the oil-based additives in these fuel gases can degrade the rubber lining; for those applications, a Grade T hose is required. This product is strictly for acetylene use.